gate valve normally made of cast iron or cast steelHere are some information on the gate valve Mabuk has to remove:

From here you will realize that once the bonnet is removed, the whole stem / yoke / hand wheel assembly will fall down.

This is a gate valve similar to the upside down one Mabuk has to remove.

Further down this page you will find the section drawing of the valve.

section view of a typical gate valve
1 BODY
2 YOKE
3 WEDGE
4 STEM
5 GLAND PACKING
6 BONNET
7 GLAND
9 HAND WHEEL
13 BOLT
14 NUT
15 STUD BOLT
16 NUT
17 BONNET GASKET
18 STEM NUT
20 BODY SEAT
21 WEDGE SEAT
24 THREAD BUSH
26 LOCK PIN
28 BONNET GASKET
details of the gland packing section of the gate valve This is the detail of the gland area.

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